A new toothless pterosaur from the Early Cretaceous Jehol Biota with comments on the Chaoyangopteridae - PubMed

Figure 2

Photo (A) and line drawing (B) of the cranial elements of the holotype (IVPP V 16059) of Meilifeilong youhao gen. et sp. nov. Abbreviations: afo, adductor fossa; ang, angular; art, articular; ch, choana; d, dentary; ec, ectopterygoid; f, frontal; fo, foramen; ios, interorbital septum; ipo, interpterygoid opening; j, jugal; la, lacrimal; lafo, lacrimal foramen; ltf, lower temporal fenestra; n, nasal; naof, nasoantorbital fenestra; npr, nasal process; m, maxilla; mpf, maxillopalatine fenestra; or, orbit; p, parietal; pl, palatine; pm, premaxilla; pmc, premaxillary crest; po, postorbital; pplf, postpalatinal fenestra; pty, pterygoid; ptyf, pterygoid fenestra; q, quadrate; qj, quadratojugal; scl, sclerotic ring; soc, supraoccipital; sq, squamosal; stf, subtemporal fenestra; utf, upper temporal fenestra; vo, vomer; l, left; r, right.